OT (Edited to add: and also now ninjaed by the question-asker) but what the hell.
Evidence for the prosecution:
Quoting this, ladyfoxfyre responds:
Quoting this, the lone cashew responds:
Both of these were the screenames’ only posts in the thread.
Circumstantial evidence may be that both their screennames refer to loneliness/solitude.
(Of course it’s hilarious that in that icky thread where ubercreep JohnClay admits to his 18-year-old self having solicited a porn-watching session with a 13-year-old girl for quite literally no reason whatsoever (the admitting, that is–I think we can guess at the reason for the would-be porn session), it’s the possible outing of a link between the lone cashew and solosam that might be more of a cause célèbre. 
I do love this place!)